Knuckle with a pivot shaft



FIG. 1 is a perspective view of a knuckle with a pivot shaft;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

The broken lines in the figure drawings represent portions of the article and form no part of the claimed design. 

CLAIM The ornamental design for a knuckle with a pivot shaft, as shown and described. 